摘要
运用算子直和分解法和二次型比较法研究了由2n阶复系数中含有指数函数和幂函数的微分算式所生成的J-自伴微分算子谱的离散性,得到了一类系数中含有指数函数和幂函数的J-自伴微分算子谱是离散的若干充分条件.
In this paper, we use the method of direct sum position of operators and quadratic form comparison to discuss the discrete spectrum of J-self-adjoint differential operator of co- efficient contains exponential function and power function that are generated by 2th order J-symmetric differential expression of coefficient contains exponential function and power function complex-valued coefficients by using the direct sum position of operators method and quadratic form comparison method.Some sufficient condition for the discrete spectrum of a class of J-self-adjoint differential operator of coefficient contains exponential function and power function are obtained.
出处
《数学的实践与认识》
CSCD
北大核心
2013年第23期255-261,共7页
Mathematics in Practice and Theory
基金
国家自然科学基金(11361039)
关键词
J-自伴微分算子
预解算子
本质谱
离散谱
J-self-adjoint differential operator
resolvent operator
essential spectrum
dis-crete spectrum